Basic consideration of MPEG-2 coded file entropy and lossless re-encoding

Kazuo Ohzeki, Yuǎn Yù Wei, Eizaburo Iwata, Ulrich Speidel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Re-encoding of once compressed flies is one of the difficult challenges in measuring the efficiency of coding methods. Variable length coding with a variable source delimiting scheme is a promising method for improving re-encoding efficiency. Analyses of coded flies with fixed length delimiting and with variable length delimiting are reviewed. Motion vector codes of MPEG-2 encoded files are modified as a variable-to-variable coding point of view. Length, bit-rates, and varieties of videos are examined. The largest file is 16 seconds of D1 full size at 720 ×480 among five video files. By entropy evaluation, an improvement of almost 20% in coding efficiency over the conventional MPEG-2 is obtained.

Original languageEnglish
Title of host publicationProceedings of the International Multiconference on Computer Science and Information Technology, IMCSIT 2010
PublisherIEEE Computer Society
Pages741-748
Number of pages8
ISBN (Print)9788360810279
DOIs
Publication statusPublished - 2010 Jan 1

Publication series

NameProceedings of the International Multiconference on Computer Science and Information Technology, IMCSIT 2010
Volume5

ASJC Scopus subject areas

  • Computer Science (miscellaneous)
  • Information Systems

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